Knit. I'm a southpaw but don't even hold a pencil in the traditional left-handed way. And not even a true left-hander anyway. I only eat and write with my left hand; everything else is done right-handed.
My ambidextrous aunt tried to teach me. I've tried "Knitting For Dummies" by holding the pictures in the book upside down. No soap
Piano? LOL! Eight years of piano lessons couldn't make me into a piano player. I was so bad that I only remember being in the annual recital once (or maybe twice). I took lessons from the nuns. My mother worked just a few blocks away from the school and on afternoons of my piano lesson, she'd stop and collect me on her way home. She told Sister "I've always wanted to play the piano, and GG is going to learn if it kills me!" Sister: "Then you should really spend the cost of lessons to do that. GG has no interest." The lessons were $1.25/week, a lot of money in those days.
After I grew up and left home, my mother took piano lessons. She learned to play Minuet in G.
I did learn to read music, though, which was handy because I played violin, trombone and clarinet in elementary school and, finally, trumpet in high school. Stuck with trumpet all four years, eventually rising to third chair. First and second chairs were waaaay too talented for me to ever get to those.
I also learned that Middle C is directly across from the belly button (providing you sit at the piano in the correct spot).
